Be sure to check for pin bones on the fish. If you find some use tweezers for best results.

Place salmon in a plastic bag with sliced onions. Pour sauce over and massage to work sauce over the salmon and onions.

Marinade in refrigerator at least 2-3 hours (or night before if you work). Occasionally turn so sauce contacts all of the fish. If you refrigerated the night before then turn the bag in the morning before…